const {
    validationResult
} = require('express-validator');
// 数据验证中间件 并行处理
module.exports = validations => {
    return async (req, res, next) => {
        await Promise.all(validations.map(validation => validation.run(req)));

        const errors = validationResult(req);
        if (errors.isEmpty()) {
            return next();
        }

        res.status(400).json({
            errors: errors.array()
        });
    };
};